Fixes for many issues in flowview, graphing window, and frame playback.

In FlowView:
- Drastically improved functionality of live mode. It actually works now
- Fixed several crash bugs
- Program didn't used to pick up new frames properly. This is now corrected.

In Graphing window:
- Fixed dynamic updates to work properly even under heavy bus loads

In frame playback:
- Fixed a bug where single stepping through frames didn't send them over canbus

deltawindow.h

@@ -0,0 +1,22 @@
+#ifndef DELTAWINDOW_H
+#define DELTAWINDOW_H
+
+#include <QDialog>
+
+namespace Ui {
+class DeltaWindow;
+}
+
+class DeltaWindow : public QDialog
+{
+    Q_OBJECT
+
+public:
+    explicit DeltaWindow(QWidget *parent = 0);
+    ~DeltaWindow();
+
+private:
+    Ui::DeltaWindow *ui;
+};
+
+#endif // DELTAWINDOW_H